polo outlet online Biological micro-electrolysis -

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Wastewater treatment process is as follows: raw wastewater regulating pond → grid → → → anaerobic pond aeration iron
PH
COD (mg / L)
BOD (mg / L)
Chroma (times)
SS (mg / L)
7 ~ 10
600 ~ 1300
200 ~ 350
500 ~ 600
150 ~ 400
However, due to the plant wastewater contains a variety of dyes intermediates, a large number of inorganic materials and a variety of water-soluble dyes, pollutant concentration, high color, poor biodegradability, using the traditional processing method for processing, the effect far from ideal. According to reports, Sun Hua et al [3] The iron and carbon bed bio-reactor complex printing and dyeing wastewater, obtained satisfactory results. Xiaoyu Tang et al [4] is conducted on the dyeing wastewater with iron filings <LABEL class=lb onclick=and color, and achieved remarkable economic and environmental benefits. Yong Wen-bin et al [5] using some of the micro-electrolysis alkaline dyeing wastewater treatment obtained satisfactory results. On this basis, we propose a bio-contact oxidation process *. electrolysis, printing and dyeing wastewater. The biological process completely, completely abandon the usual physico-chemical treatment methods, without adding coagulant and other chemicals, less sludge production, processing and low cost. Printing and dyeing wastewater treated by the process can be in full compliance with emissions requirements. At present, the process has a number of printing and dyeing mill in the Shenzhen area of wastewater treatment projects in the application, have received a more satisfactory results.

4.1 micro electrolytic cell biological mechanism
Table 1 Wastewater Quality
Abstract: Electrolysis and efficient use of biological contact oxidation process by combining the printing and dyeing wastewater treatment. The technology process is simple, hanging film is good, the treatment effect stability, while without adding chemicals such as coagulants, sludge production of small, low cost deal.
Keywords: Printing and Dyeing Wastewater Microelectrolysis contact oxidation
Pool filled with a highly efficient anaerobic biological micro-electrolysis packing, packing of biological micro-electrolysis of the four stages of the anaerobic reaction (ie hydrolysis stage, the acidification stage, acetogenic phase, methanogenic stage) have a good strengthening effect . Second, biological micro-filler can be involved in the electrolysis reaction, electrolysis can occur of their own reaction to produce a new eco-active substances such as H + and Fe2 + are of high chemical activity of many components with the oxidation of wastewater reduction, destruction of dye color hair color or aid groups, and even chain scission, loss of hair color capability, but also allows large molecules broken down into small molecules of the intermediates, so that some of the biodegradable organic matter and tired oxygen microbial chemicals toxic to biological treatment into the material easy to improve the biodegradability of wastewater [3,6]. After testing, the anaerobic tank effluent BOD / COD can reach 0.4 to 0.58, while the raw water BOD / COD of 0.15 to 0.3. Again, biological micro-electrolysis electrolysis reaction occurs filler can buffer changes in pH in wastewater, in order to create a good anaerobic conditions, and thus the ability to craft a strong impact load. Finally, the surface area of biological micro-electrolysis fill large anaerobic attached to the filler, and not easily lost, can maintain a relatively high anaerobic microbial biomass pool to ensure the efficiency of anaerobic treatment.
4.3 biological affinity filler
Biological micro-electrolysis - high oxidation process of dyeing wastewater

authors: Gong Liwen Liang Shunwen Configurable Gong Min Li Jing Hung Chen Jianxiang will
Wastewater plant emissions of the current 2 000 m 3 / d. Taking into account the amount of wastewater discharge, water quality fluctuation and the development prospects of the plant, the design of wastewater treatment capacity of 3 600 m 3 / d (150 m 3 / h ), the processing system daily continuous operation 24 h. After debugging the system, at the end of August 2001 formally put into use, stable, handling is better.
3 main treatment tank
4.2 iron <LABEL class=lb onclick= Iron 3 adsorption capacity of suspended solids in waste water produced by electrolysis through micro-insoluble color and composition of the insoluble dye adsorption and condensation can be . Iron <LABEL class=lb onclick=floc thick, compact structure of activated sludge biological iron. Activated sludge biological iron absorption not only because of the role of microorganisms and organic enrichment, accelerated microbial degradation of organic compounds with high metabolic activity, and its density is much larger than the conventional activated sludge with good settling ability, far easier than the conventional activated sludge settling, separation, in the mechanical filter press, dewatering performance is superior to conventional activated sludge. Therefore, iron <LABEL class=lb onclick=shock load capacity, changing the water quality printing and dyeing wastewater adaptability, good and stable removal.
(2) adjust the pool. The higher concentration of waste water production, composition, and intermittent discharge characteristics of complex, wastewater quality and quantity fluctuations, taking into account the operational stability of the biological treatment follow-up, the need for water quality, water quantity regulation, the establishment of a wastewater regulating pond Block, its size is 12 m × 16 m × 5.5 m, the effective volume of 750 m 3 ,[link widoczny dla zalogowanych], hydraulic retention time was 5 h, reinforced concrete structure, set in the ground below the pool and the greening of overburden .
(3) anaerobic tank (biological micro-electrolytic cell). Anaerobic tank 3, and its size is 60 m × 32 m × 4 m, the effective volume of 6000 m 3 , hydraulic retention time of 40 h, reinforced concrete structure, set in the ground, built-in biological micro- electrolytic fill. Biological micro-electrolytic iron filler. Filler bracket pool set away from the bottom 1.5 m at the stent platform, the platform of the filling evenly placed baskets filled with iron filings (size 1 m × 1 m × 0.5 m, with Ф3 mm × 40 mm wire mesh production), the total packing volume of 600 m 3 . In the wastewater treatment system is running, fill a certain amount of depletion will occur. After running for some time, you can fill through the access doors to each additional iron basket in order to achieve additional or replacement fill. Manhole with a number of activities reserved for the size are 1.5 m × 1.5 m, on the lid can be opened, repair, open the lid to enter, to supplement or replace the iron filler, under normal circumstances, be every 5 to 6 years Replace packing. The regulation of waste water from the pool of homogenized pumped into the anaerobic tank lift pump after the electrolysis in the anaerobic bio-pool fillers and fully domesticated by the high activity under the action of anaerobic microorganisms, waste water molecule, refractory organic matter degradation of small molecule, easily degraded organic matter.
Dyeing wastewater with a large amount of water, high levels of organic pollutants, colors and high alkaline, water quality and other characteristics change. In recent years, the development of chemical fiber fabrics, silk printing and dyeing and finishing the rise and technology advances, the PVA slurry, alkaline solution rayon fabrics (mainly phthalates), biodegradation of new additives is difficult organic poured into the dyeing wastewater. Currently, printing and dyeing wastewater usually biological - chemical compound method for processing [1 2], physical and chemical methods generally or coagulation and flotation method, biochemical methods usually by anaerobic, activated sludge or biofilm .
(6) sedimentation tanks. 2, the dimensions are 18 m × 8 m × 5 m, the effective volume are 600 m 3 , hydraulic retention time were 4 h, reinforced concrete structure, the surface load of 1.15 m 3 / (m 2 · h). Mud in the sedimentation tank to achieve separation,[link widoczny dla zalogowanych], the supernatant into the wetland, sediment anaerobic sludge return to the pool. Constructed wetland treatment system is to enable the growth of dense water in the aquatic (marsh) plant leaves flow, and further removal of residual contaminants in water.
4 Results and discussion
0 Introduction

2 processes
(1) grid. Wastewater entering the treatment system, should be used in the grid coarse filters to remove impurities in water to protect the treatment facilities being damaged, and to avoid pipe blockage.
(5) contact oxidation pool. 2, the dimensions are 20 m × 13 m × 5 m and 18 m × 5 m × 5 m, respectively, the effective volume of 1050 m 3 and 360 m 3 , the hydraulic retention time was 7 h and 2.4 h, reinforced concrete structure, are equipped with biological affinity packing. Fill the center of the rope, polyolefin plastic support frame and elastic filament composed of filament to the center support frame radial growth was uniform in the water, have some flexibility, rigidity, mesh 250 mm × 200 mm, spacing 50 mm, respectively, filling volume 780 m 3 and 270 m 3 . Using blowers and stainless steel perforated pipe underwater blast <LABEL class=lb onclick=Anaerobic tank effluent by iron <LABEL class=lb onclick=
Wastewater plant for the master water quality changes, especially entrusted to the Shenzhen Municipal Environmental Protection Monitoring Station of the plant waste water generated daily within a month for water quality measurement to determine the results in Table 1.
Shenzhen City Komeito Zhenmou dyeing in the production process have a certain amount of printing and dyeing wastewater. To avoid water pollution on the surrounding environment,[link widoczny dla zalogowanych], must deal with standards before discharge.
(4) iron <LABEL class=lb onclick=Block 1, size 65 m × 15 m × 4 m, the effective volume of 3 300 m 3 , hydraulic retention time of 22 h,[link widoczny dla zalogowanych], reinforced concrete structure, set up under the ground, equipped with iron filings filler. Packing is divided into 3 layers, each thickness of 400 mm, layer from 300 mm, the lowest level from the bottom 1 m, the total iron 1000 m 3 .

1 waste water

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